Version 0.1.15 released

New in this release:

* Relax restriction of delete and content merges introduced in previous release 
so we do not have to rewrite history yet
* skip compilation of winrandom.pyd if python 2.4 is installed (Windows only)
* fixed: independent deletes should merge implicitly
* fixed: server does not rebuild when there are empty branches
* fixed: bug which caused all sorts of weird and bad symptoms related to renames
* fixed: traceback on checkout from a keyboard interrupt
* fixed: reworked how comments are handled to really deal with locales correctly

All bugfixes here, no new features.

The documentation section on the web page has been replaced by a wiki.
Searching the wiki is broken at the moment, it's being worked on.

Ross